Amplified Bass Tubes 

What is the best location for my Bazooka?

Bazooka Placement

Locate an area in the rear of the vehicle where you would like to place the Bazooka® subwoofer systems. The location you have selected must meet the following requirements in order for the Bazooka® to deliver the best performance in your vehicle.

    • The woofer (grill end) should be facing into a corner. The rear of your vehicle should be considered one big corner. Facing rear usually produces the best results and is preferable to facing sideways. Sideways in the rear of the vehicle works well but SAS never recommends facing the woofer in the direction of the listener as this usually delivers poor quality output.


    • Ideally, there should be 2 to 4 inches between the woofer and the corner it is pointing into for best results. However if your selected placement is not exactly within these parameters, it is not critical.


    • The mounting area should be carefully checked to be sure that the mounting screws will not damage the gas tank, electrical wiring, fuel lines or the spare tire during the mounting process. (This requires a visual search of the underside of the vehicle where the Bass Tube enclosure is to be mounted)


  • The strap mounting bases should be screwed securely to a rigid surface that is part of, or anchored to, the structure of the vehicle. Be sure that you application meets all of these requirements
When using multiple Bazooka®'s, what is the best way to configure my Bass Tubes® enclosure?

Multiple Bazooka® Placement

There are 3 things to remember when using multiple Bazooka® subwoofers.
    • Face all woofers to the rear of the vehicle.

    • Align all woofers on the same plane.

  • Position the woofers at a distance from the rear that sounds good to you.
Rear Entry?
When using two or more Bazooka® subwoofers it is ideal to position them so that all woofers face to the rear of the vehicle. This almost always yields the best results in output.

If space is not available to position the woofers to the rear or it is not desirable due to cosmetic considerations, you may choose to direct the woofers into the side panels of the vehicle. This placement will result in a minor loss in output, which may or may not be audible, depending on your application.

You should never place a Bazooka® so that the woofer faces in the direction of the front of the vehicle. This will cause the output in the bass region to suffer greatly and therefore is never recommended by SAS.

A Virtual Wall of Sound!
To maintain the most output efficiency and achieve the most desirable sound quality, an effort should be made to keep the output ends of all Bass Tube enclosures aligned, so that the woofers are all on the same plane. This assure that the woofers work together and form a team that acts as a single large diaphragm. When Bazooka® subwoofers couple in this fashion, standing waves are minimized and phase alignment is easily maintained. This alignment will yield higher sound pressure levels in your vehicle, think of the possibilities!

Do You Hear What I Hear?
The type of bass response that you get from your system can be adjusted or tuned, simply by changing the position of the Bass Tube enclosure. In general, as you move the woofer end of the Bazooka® subwoofer closer to a rigid non-porous surface at the rear of your vehicle, the bass will get tighter and more accurate. As you move the woofer away from that surface the bass will open up and sound more boomy.

SAS has always recommended placement of 2 to 4 inches from a non-porous loading surface as a rule of thumb. Although this typically works best, you should not be alarmed if the sound you desire falls somewhere outside these guidelines.

Physical Challenge?
By using these three simple principles as a foundation you can build just about any type of system from mild to WILD utilizing multiple Bazooka® subwoofers.

As of 2/2/96 the highest officially measured SPL in a sanctioned Sound-Off Competition using multiple Bazooka® subwoofers is 152.3 dB by Ajay Maisuria of Class A Communications of London, England.

His system has 21 T82's and 700 watts of total system power, that's RIGHT only 700! All this in a Nissan van that is used daily as a fully functional delivery vehicle for his store, but on the weekends it hits the Sound-Off Circuit and wins! Last year 2nd in Nationals, this year…who Knows!

Now That's Efficiency!

Update 9/30/96; Ajay and his crew changed a few things around in their van. The current system is running only 300 watts of power on the Bazooka speakers and the official SPL was recorded in competition @ 152.3 dB.

When I play one Bass Tubes® enclosure it sounds great, but I get a muffled sound when the second Bass Tubes® enclosure is added.

Phase Cancellation
When two speakers in the same frequency range produce sound waves that are inverted from one another or 180° out of phase, the sound waves will cancel each other out to some degree. This effect will be heard as a drop in the output level and/or a muffled or muddy quality in the Bass Response.

The source of this Phase Cancellation can be at any point in the signal path. The obvious cause of this problem would be a speaker connection that was reversed in polarity, but that is not always the case. Sometimes amplifier channels will shift phase 180° for no good reason, or a signal processor could have a setting for phase that has been set incorrectly or the source material could just be recorded in error. No matter what or where the cause is located, the solution is an easy one.

Disconnect all but one Bazooka® from your system. Be sure that any loose wire connections are insulated to avoid the chance of short circuiting any of the electronic equipment. Listen to the system and take note of the level of the Bass Response. Connect the next Bazooka® and compare the level of the combined output to that of the single unit. If the Bass Response increases, the Phasing is correct and you can repeat this process on the next Bazooka®. if the level of the Bass Response drops, the Phasing is incorrect and you should reverse the speaker connections to this Bazooka® and compare again. In short to INCREASE IS GOOD, to DECREASE IS BAD!

Using this method, any number of Bazooka® subwoofers can be kept in absolute phase.

My Bazooka® plays great when the trunk is open but, when I close the trunk lid the bass goes away.

Where's the BASS?
First you should rule out any Phase Cancellation problems that may exist in your system.

When this variable is eliminated from the equation, there are primarily two factors left that could cause this effect in your vehicle.

    • Restriction of AIR FLOW

  • Development of STANDING WAVES
If the bass response in your system drops when you close the trunk, chances are it is due to poor AIR FLOW, excessive STANDING WAVES or a combination of the two.

AIR FLOW
The Bass Response will suffer if the trunk is sealed off from passenger compartment so that AIR FLOW is restricted between the two areas. Since sound waves are nothing more than moving air, any reduction in the AIR FLOW from the trunk will result in a reduction of the bass response in the passenger compartment.

Can I Get Some Relief Over Here?
To cure this problem you must reduce the restriction of AIR FLOW between the two areas.

This can be accomplished by removing some insulation or other acoustically opaque materials from behind the rear seats, under the rear deck or beneath the rear package tray.

If this is not possible, the only other way to overcome this problem is to create an opening in the acoustically opaque material between the trunk and the passenger compartment that is causing the AIR FLOW restriction. In most cases the back deck is the easiest area to create this type of opening. The opening can be in the form of a matrix of small holes, one or more ports, ducts or vents. Since the object is to increase AIR FLOW, the opening should be as large as possible without compromising the integrity of the vehicle.

With this opening(s) in the acoustically opaque material the Bass Response will pass through other acoustically transparent materials such as foam or cloth found in the rear seats, package tray or rear deck areas.

If the opening is visible, it can be covered with a cosmetic grill or a custom rear deck. This process requires custom install skills and we recommend that you consult with a qualified installation professional or have the work done by an Authorized SAS Dealer.

STANDING WAVES
When sound waves of the same frequency come together at opposite directions, they interfere with one another resulting in a full or partial cancellation of the output at that frequency. This type of wave interaction is known as STANDING WAVES.

What Do I Get?
If your Bazooka® subwoofer is positioned too far forward in the trunk area, it may result in systems of COMPLEX STANDING WAVES, resulting in a loss of bass output.

In a trunk, the paths that sound waves take to the front of the passenger compartment are rarely 100% acoustically transparent. This creates acoustical resistance or reduced AIR FLOW between the trunk and passenger compartment.

When this sub-division of the vehicles air space is compounded by the reflective and semi-reflective surfaces common in a trunk compartment, the development of COMPLEX STANDING WAVE SYSTEMS are common phenomenon.

If your Bazooka® subwoofer is placed near a semi-transparent surface in the trunk, like the area under the rear deck or behind the rear seats, the sound waves tend to bounce around in the trunk until pressure forces these sound waves into the passenger compartment.

This typically reduces the Bazooka® subwoofers output due to extreme systems of COMPLEX STANDING WAVES and takes away from the overall sound quality of the bass response.

There is a Remedy!
If you think you are experiencing output problems due to STANDING WAVES, the good news is you can easily correct this problem by simply relocating your Bass Tubes® enclosure(s) toward the rear of the vehicle.

When a Bazooka® subwoofer is loaded into a corner at the rear of the trunk the sound waves reflect off of the acoustically opaque corner and travel forward in a direct path towards the passenger compartment, reaching the listener with fewer STANDING WAVES and greater Bass Output.

Once the placement of the Bass Tubes® enclosure is at the rear of the trunk you should notice a marked improvement in the quality and output level of the bass response created by your Bazooka® subwoofer product.

What are the specifications of my Bazooka® speaker system?

Out of production "T" & "Series II" models
5" Bass Tubes® enclosure T52  
6.5" Bass Tubes® enclosure T62 T16
8" Bass Tubes® enclosure T82 T18
10" Bass Tubes® enclosure T102  

T52 Specifications
Bass Tubes Enclosure
Computer aligned bass reflex-ducted port
Woofer Size
5"
Voice Coil Size
1" high power / high temp
Magnet Size
20 oz.
Frequency Response
39-1500Hz
Efficiency
97dB*
Power Handling
6 to 50 watts/channel
T62 Dimensions
18" X 5" X 6"
Weight
19 lbs.
Impedance
4 ohms**

T62 Specifications
Bass Tubes Enclosure
Computer aligned bass reflex-ducted port
Woofer Size
6.5"
Voice Coil Size
1" high power / high temp
Magnet Size
20 oz.
Frequency Response
39-1500Hz
Efficiency
100dB*
Power Handling
6 to 100 watts/channel
T62 Dimensions
18" X 6.75" X 8"
Weight
22 lbs.
Impedance
4 ohms**

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T82 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 8"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 102dB*
Power Handling 6 to 150 watts/channel
T82 Dimensions 18" X 8.5" X 10"
Weight 31 lbs.
Impedance 4 ohms**

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T102 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 10"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 104dB*
Power Handling 6 to 200 watts/channel
T102 Dimensions 20.75" X 10.3" X 12.2"
Weight 23 lbs.
Impedance 4 ohms**

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T16 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 6.5"
Voice Coil Size 1" high power / high temp
Magnet Size 20 oz.
Frequency Response 39-1500Hz
Efficiency 100dB*
Power Handling 6 to 100 watts/channel
T102 Dimensions 36" X 6.75" X 8"
Weight 22 lbs.
Impedance 4 ohms**

T18 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 8"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 102dB*
Power Handling 6 to 150 watts/channel
T102 Dimensions 36" X 8.5" X 10"
Weight 31 lbs.
Impedance 4 ohms**
What are the dimensions of my Bass Tubes® enclosure?

Out of production "T" & "Series II" models
5" Bass Tubes® enclosure T52  
6.5" Bass Tubes® enclosure T62 T16
8" Bass Tubes® enclosure T82 T18
10" Bass Tubes® enclosure T102  

T52 Specifications
Bass Tubes Enclosure
Computer aligned bass reflex-ducted port
Woofer Size
5"
Voice Coil Size
1" high power / high temp
Magnet Size
20 oz.
Frequency Response
39-1500Hz
Efficiency
97dB*
Power Handling
6 to 50 watts/channel
T62 Dimensions
18" X 5" X 6"
Weight
19 lbs.
Impedance
4 ohms**

T62 Specifications
Bass Tubes Enclosure
Computer aligned bass reflex-ducted port
Woofer Size
6.5"
Voice Coil Size
1" high power / high temp
Magnet Size
20 oz.
Frequency Response
39-1500Hz
Efficiency
100dB*
Power Handling
6 to 100 watts/channel
T62 Dimensions
18" X 6.75" X 8"
Weight
22 lbs.
Impedance
4 ohms**

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T82 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 8"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 102dB*
Power Handling 6 to 150 watts/channel
T82 Dimensions 18" X 8.5" X 10"
Weight 31 lbs.
Impedance 4 ohms**

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T102 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 10"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 104dB*
Power Handling 6 to 200 watts/channel
T102 Dimensions 20.75" X 10.3" X 12.2"
Weight 23 lbs.
Impedance 4 ohms**

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T16 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 6.5"
Voice Coil Size 1" high power / high temp
Magnet Size 20 oz.
Frequency Response 39-1500Hz
Efficiency 100dB*
Power Handling 6 to 100 watts/channel
T102 Dimensions 36" X 6.75" X 8"
Weight 22 lbs.
Impedance 4 ohms**

T18 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 8"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 102dB*
Power Handling 6 to 150 watts/channel
T102 Dimensions 36" X 8.5" X 10"
Weight 31 lbs.
Impedance 4 ohms**
How do I add an amplified Bazooka to my Nissan/Delco Bose system?

DON'T PANIC! This is easily accomplished with any Amplified Bazooka.

What makes this application a little tricky is that Bose uses low impedance speakers (0.5 ohms) on their amplifiers (located inside the enclosure of each speaker) that use relatively small amounts of power to generate decent output volume from their speakers.

Also the signal from the Bose head unit to their amplifiers is not what one would typically considered speaker level or line level. It actually falls below what is normally considered to be line level. This makes the signal a little difficult to use to drive the inputs of most amplifiers
on the market.

The output from the Bose amplifiers however, is in the 3 Volt range. That puts it at the very bottom of the Amplified Bazooka speaker level input sensitivity which if used, may not leave you with much adjustment on the LEVEL control.

To avoid this potential problem we recommend that you drive the low level inputs of the Amplified Bazooka with the high level outputs of the Bose amplifiers.

This is accomplished by cutting the RCA connectors off of the Amplified Bazooka's low level input leads, and using the Blue wires as the positive leads and the White wires as negative leads. Tie into the high level leads of one right and one left Bose speaker. These high level
leads are located inside each enclosure just behind the speaker. Make your connections to these wires and run them out of each enclosure to the Amplified Bazooka inputs.

This configuration will allow you to have much greater control over the bass level adjustment and still take full advantage of the Amplified Bazooka's balanced input circuitry.

My amplified unit works fine but, why is the slave unit not playing?

Check the Fuse
First make sure that the slave output fuse is installed and not blown. If blown replace the fuse with one of the same value and retest slave unit. If the fuse blows again, disconnect and check the slave unit.

Checking the Wiring
Determine whether or not the Amplified Bazooka slave output wires are working properly. This can be tested by connecting the slave output wires to a speaker that you know is functional

With the Amplified Bazooka playing, place the slave output wires; Brown (+) and Yellow (-); on the terminals of the test speaker. If the test speaker plays, the wiring is not the problem. Check the slave unit. If the test speaker does not play, the problem may be in the wire harness
itself.

To test the wire harness you need an ohm meter or some type of continuity checking device. Using your meter, check the "slave" output wires for continuity between the plug end and the loose end of each wire. If there is no continuity on one of the "slave" output wires, a faulty wire or connection in the harness or the in-line fuse holder is the problem. If this problem can't be corrected, contact SAS Customer Service for a replacement.

If the test speaker will not play and the wire harness checks out, then the problem is in the amplifier and it should be returned for service.

Check the Bazooka Slave Unit
If the test speaker plays when connected to the Amplified Bazooka Slave Outputs, and the Slave unit will not, then the problem in the slave unit. This could be caused by a bad terminal cup, a connection between the terminal cup and the woofer or something in the woofer itself. You can return the unit for service or if you feel up to it, remove the woofer and check the internal connections, using the following instructions.

Checking the enclosure connections
To check the possibility that one of the wires inside the slave unit may have come loose, you will need a #2 Phillips screwdriver to remove the speaker from the Bass Tubes enclosure.

Be careful not to damage the speaker or it's gasket while removing the speaker from the Bass Tubes enclosure.

Once you have removed the speaker check the connections at the terminal cup and at the woofer to make sure they are in place.

If you find a terminal that is not connected, reconnect it and make sure that it has a tight fit.

Reinstall the woofer and check the unit again, it should play properly.

If the wiring appears to be in good order and the slave unit will not play, it is possible that the problem lies in the speaker itself. Should this prove to be the case the unit needs to be returned for service.

Contact the SAS Bazooka Customer Service Department at (800) THE-TUBE for a return authorization.

What are the Specifications of my Amplified Bazooka Bass Tubes enclosure?
Select Amplified Model
Current Models
A-30 Amplifier T52A-30 T62A-30 T82A-30
A-80 Amplifier T62A-80 T82A-80 T102A-80


SAS will continue to service & support discontinued products, look for this area to be fully functional soon.

Discontinued Models
A-40 Amplifier T62A-40 T82A-40 T102A-40
A-70 Amplifier T62A-70 T82A-70 T102A-70

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T62A-80 Specifications
Woofer Size: 6.5"
Efficiency: 100dB*
Dimensions: 18.325" X 6.75" X 8"
Magnet Size: 20 oz.
Weight: 15 lbs.
Rated Output: @ 4 ohms 80 Watts
@ 2 ohms 120 Watts (w/optional slave unit )
(Measurement performed with 100Hz input @ 13.8 Volts battery voltage and <0.2% THD+N)

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T82A-80 Specifications
Woofer Size: 8"
Efficiency: 102dB*
Dimensions: 18.325" X 8.5" X 10"
Magnet Size: 28 oz.
Weight: 20 lbs.
Rated Output: @ 4 ohms 80 Watts
@ 2 ohms 120 Watts (w/optional slave unit )
(Measurement performed with 100Hz input @ 13.8 Volts battery voltage and <0.2% THD+N)

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T102A-80 Specifications
Woofer Size: 10"
Efficiency: 104dB*
Dimensions: 21.1" X 10.3" X 12.2"
Magnet Size: 28 oz.
Weight: 25 lbs.
Rated Output: @ 4 ohms 80 Watts
@ 2 ohms 120 Watts (w/optional slave unit ) (Measurement performed with 100Hz input @ 13.8 Volts battery voltage and <0.2% THD+N)

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T52A-30 Specifications
Woofer Size: 5"
Efficiency: 97dB*
Dimensions: 18" X 5" X 6"
Magnet Size: 20oz.
Weight: 13lbs.
Rated Output: 30W @ 2 (Ohm), (Measurement performed with 100Hz input @ 13.8 Volts battery voltage and < 1% THD+N)

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T62A-30 Specifications
Woofer Size: 6.5"
Efficiency: 100dB*
Dimensions: 18" X 6.75" X 8"
Magnet Size: 20oz.
Weight: 14lbs.
Rated Output: 30W @ 2 (Ohm), (Measurement performed with 100Hz input @ 13.8 Volts battery voltage and < 1% THD+N)

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T82A-30 Specifications
Woofer Size: 8"
Efficiency: 102dB*
Dimensions: 18" X 8.5" X 10"
Magnet Size: 28oz.
Weight: 17lbs.
Rated Output: 30W @ 2 (Ohm), (Measurement performed with 100Hz input @ 13.8 Volts battery voltage and < 1% THD+N)


Detailed A-80 Amplifier Specifications

Crossover
18dB per octave low pass electronic crossover continuously variable from 60Hz to 250Hz.

Filter Type
Third order Butterworth filter.

Input Sensitivity
High Level 2.4 Volts to 25 Volts RMS.
Low Level 100mV to 1 Volt RMS.
Continuously variable gain control

Frequency Response
Crossover at highest setting 15Hz to 250Hz (+0/-3dB)
Crossover at lowest setting 15Hz to 60Hz (+0/-3dB)

Protection
Thermal; over voltage; under voltage; on PC board reverse voltage (15 amp fuse); in-line power fuse 25amp; fused output to slave unit (5 amp)

Turn-On Circuit
ON threshold 2.2 Volts; ON Current 6 mA @ 13.8 Volts

Auto Turn-On Mode
High Level input 400mV RMS.
Low Level input 18mV RMS.

Current Consumption
@ maximum output: 26 Amps
@ rated power w/4 ohms load: 10 Amps
@ rated power w/2 ohms load: 16 Amps
@ idle: 0.9 Amps
@ standby: 11mA

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Detailed A-30 Amplifier Specifications

Crossover
18dB per Octave Low Pass Electronic
Crossover point fixed @ 120Hz

Filter Type
Third Order Butterworth Filter

Input Sensitivity
High Level 2.4 Volts to 25 Volts RMS
Low Level 100mV to 1 Volt RMS

Protection
Thermal; over voltage; under voltage

Turn-On Circuit
On Threshold 2.2 Volts
On Current 6mA @ 13.8 Volts

Auto Turn-On Mode
High Level Input 400mV RMS
Low Level Input 18mV RMS

Current Consumption
@ maximum output: 8 A
@rated power: 4.5 A
@idle:150mA
@standby:.05A

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Bazooka Efficiency

* The efficiency levels of all Bazooka subwoofers featuring the patented BassTubesenclosure system are measured in the typical environment, in the low bass region withone watt of power.

How do I hook-up a slave unit to my Amplified Bazooka?

Select Product Model

Current Models
A-80 Amplifier T62A-80 T82A-80 T102A-80
A-30 Amplifier No slave output on A-30 amps

Discontinued Models
A-40 Amplifier T62A-40 T82A-40 T102A-40

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A-80 Optional High-Level Output


The Amplified Bazooka has provisions for high level output to a second Bass Tubes enclosure. If you want to use this feature, you can purchase a Bazooka slave unit from an authorized SAS dealer.

Be sure to use a slave unit that is the same size as you amplified unit. This is necessary because different size woofers have different efficiencies. These efficiency differences result in the two woofers playing at different volume levels, making it difficult to adjust the system to the desired sonic quality.

Located the BROWN and YELLOW wires on the 14-pin Molex plug, connect the BROWN wire to
the RED terminal of the slave unit, and the YELLOW wire to the BLACK terminal of the slave unit.

The Amplified Bazooka is now operating under a 2 ohm load and is delivering a total of 120 watts.

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A-70 Optional High-Level Output


The Amplified Bazooka has provisions for high level output to a second Bass Tubes enclosure. If you want to use this feature, you can purchase a Bazooka slave unit from an authorized SAS dealer.

Be sure to use a slave unit that is the same size as your amplified unit. This is necessary because different size woofers have different efficiencies. These efficiency differences result in the two woofers playing at different volume levels, making it difficult to adjust the system to the desired sonic quality.

Located the BROWN and YELLOW wires on the 10-pin Molex plug, connect the BROWN wire to
the RED terminal of the slave unit, and the YELLOW wire to the BLACK terminal of the slave unit.

The Amplified Bazooka is now operating under a 2 ohm load and is delivering a total of 100 watts.

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A-40 Optional High-Level Output


The Amplified Bazooka has provisions for high level output to a second Bass Tubes enclosure. If you want to use this feature, you can purchase a Bazooka slave unit from an authorized SAS dealer. Be sure to use a slave unit that is the same size as you amplified unit. This is necessary because different size woofers have different efficiencies. These efficiency differences result in the two woofers playing at different volume levels, making it difficult to adjust the system to the desired sonic quality. Located the two Black Wires on the end of the 9-pin plug, connect the first Black wire to the RED terminal of the slave unit, and the second Black wire (with ribbing) to the BLACK terminal of the slave unit. The Amplified Bazooka is now operating under a 2 ohm load and is delivering a total of 80 watts.
How do I set the CROSSOVER and LEVEL controls on my Amplified Bazooka?
Current Models
A-30 Amplifier
A-40 Amplifier
A-70 Amplifier
A-80 Amplifier

Adjusting the A-80 Crossover and Level Controls



Adjusting The Crossover
The built-in crossover on the Amplified Bazooka is a 18dB per octave electronic low pass filter, it has a 50Hz to 250Hz variable crossover point.

Select the crossover point that best suits your system design. Set the potentiometer labeled XOVER to the point you selected, 50Hz being all the way to the left (counter-clockwise) and 250Hz being all the way to the right (clockwise).

When you have set the crossover, proceed to the next step.

Adjusting Level Control
Locate the potentiometer labeled LEVEL. This is the level control.

Start with the level control turned all the way to the left (counter-clockwise). The bass should be off or very low at this point.

Turn up your head unit until the sound from the existing speakers starts to clip or distort. This is the point in your system where you will get maximum volume with the least amount of distortion.

With the head unit at this point, turn the level control up (counter-clockwise) slowly until the bass volume blends well with the existing high frequency speakers.

This should be the proper setting for the level control.

Now that the level is set, you may want to go back to the crossover control and adjust the crossover point by ear to meet the desired sonic quality of your system design.

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Adjusting the A-30 Level Control


Note: The A-30 Crossover is an 18dB per octave electronic low pass filter with a fixed crossover frequency of
120 Hz.

Adjusting Level Control
Locate the knob above the wire harness of the A30 amplifier. This is the level control.

Start with the level control turned all the way to the left (counter-clockwise). The bass should be off or very low at this point.

With your favorite music playing, turn up your head unit until the sound from the existing speakers starts to clip or distort. This is the point in your system where you will get maximum volume with the least amount of distortion.

With the head unit at this point, turn the Bazooka level control up (counter-clockwise) slowly until the bass volume blends well with the existing high frequency speaker level.

This should be the proper setting for the level control.

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Adjusting the TA-70 Crossover and Level Controls


Adjusting the TA-70 Crossover
The built-in crossover on the Amplified Bazooka is a 12dB per octave electronic low pass filter, it has a 50Hz to 250Hz variable crossover point.

Select a crossover point that best suits your system design. Set the potentiometer labeled XOVER to the point you selected, 50Hz being all the way to the right (clockwise) and 250Hz being all the way to the left (counter-clockwise).

When you have set the crossover, proceed to the next step.

Adjusting the TA-70 Level Control
Locate the potentiometer labeled LEVEL. This is the level control. Start with the level control turned all the way to the right (clockwise).

The bass should be off or very low at this point. Turn up your head unit until the sound from the existing speakers starts to clip or distort. This is the point in your system where you will get maximum volume with the least amount of distortion.

With the head unit at this point, turn the level gain control up slowly until the bass volume blends well with the existing high frequency speakers.

This should be the proper setting for the level control.

Now that the level is set, you may want to go back to the crossover control and adjust the crossover point by ear to meet the desired sonic quality of your system design.

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Adjusting the TA-40 Crossover and Level Controls
.

Adjusting the Crossover
The built-in crossover on the Amplified Bazooka is a 12dB per octave electronic low pass filter, it has a 50Hz to 250Hz variable crossover point. Select the crossover point that best suits your system design. Set the potentiometer labeled XOVER to the point you selected, 50Hz being all the way to the right (clockwise) and 250Hz being all the way to the left (counter-clockwise). When you have set the crossover, proceed to the next step.

Adjusting the Level Control
Locate the potentiometer labeled LEVEL. This is the level control. Start with the level control turned all the way to the right (clockwise). The bass should be off or very low at this point. Turn up your head unit until the sound from the existing speakers starts to clip or distort. This is the point in your system where you will get maximum volume with the lowest level of distortion. With the head unit at this point, turn the level gain control up slowly until the bass volume blends well with the existing high frequency speakers. This should be the proper setting for
the level gain control. Now that the level is set, you may want to go back to the crossover control and adjust the crossover point by ear to meet the desired sonic quality of your system design.

My Amplified Bazooka is shutting off at low volume levels.
This is usually a problem related to the Auto Turn-On feature. When the source unit's volume is turned down, thevolume level will sometimes drop below the On Threshold of the Auto Turn-On circuit. For this reason we list theAuto Turn-on as the last option when installing an Amplified Bazooka.

The best way to eliminate this situation is to place the Auto Turn-On Jumper in the Off position. Then run a remote wire from the Auto Antenna or Remote Out of your source unit to the Orange Wire on the Amplified Bazooka. If your source unit does not have a Remote Output then you want to find an Ignition or Accessory source from the fuse block. It is always best to use the SAS On/Off Switch to control your Amplified Bazooka. Information about all Remote Turn-On options is listed under Amplified Bazooka Installation and Wiring.

If you do not have an SAS On/Off Switch, they are available from most SAS Authorized Dealers or you can order one direct from SAS. Contact the SAS Customer Service Department at (800) THE-TUBE to place an order.

My Amplified Bazooka comes on but no sound is produced.
Check all of your connections to confirm they have been properly made.

You should have 12 Volts at both the amp power wire and the remote turn-on wire. If both of these wires havepower, the power LED should be illuminated. If it is not illuminated or it is dim, you may have a problem with yourground wire. Check for good Ground Connection.

If all power path connections check out, it is time to confirm that you have signal at the amplified Bazookainputs. This can be done with a pair of head phones (be careful not to turn up the volume on your source unit withthe head phones on!). If you have no signal coming from the source unit, this may indicate a short in the wiring atsome point between the amp and the source unit.

If you have signal at the inputs, there are three possibilities left.

1.The internal connection between the woofer and the amplifier is disconnected.
2.The woofer is dead.
3.The amplifier is not functioning properly.

The first two of these problems can be checked quickly if you have a known working speaker handy. Connect the
optional high level output wires to a working test speaker. If the speaker plays the amp is functional and internal
woofer or wiring is the problem.

If the problem is a wire connection, it can be reconnected and the unit will function properly.

If the problem is the woofer or the amplifier, the unit needs to be returned to SAS for service.

Contact SAS Customer Service at 1-800-THE-TUBE for a return authorization.

Do I need to hook up left and right speaker inputs to my Amplified Bazooka?
YES! The left and right channels may contain different information in the bass region. If you do not use both channels for input, some of the signal will be lost which is undesirable. The Amplified Bazooka subwoofer accepts both left and right channel input in either high or low level ranges. This STEREO input is summed into a MONO signal inside the amp and bass from both channels is produced from the Bazooka.
Will an Amplified Bazooka work with my high-power deck?
YES. The speaker input section of an SAS Amplified Bazooka is designed to handle up to 25 Volts RMS. This
means that an Amplified Bazooka can handle all high power decks on the market.
How do you remove the Power/Ground plug from an Amplified Bazooka?

The housing is the secret to this puzzle. It may look or feel impossible, but it's really quite easy once you know the trick!

The main thing to remember is DO NOT PULL ON THE POWER AND GROUND WIRES.

The trick to removing the 2-pin power plug is to avoid pulling on the power wires. Instead pull out on the BLACK plastic plug housing only. As the plug housing slides back it releases 2 tabs inside and the plug that lock into the terminals on the amplifier. If you do not release these tabs before pulling on the wires the plug will not come off!

Hold onto the housing with your thumb and fore finger, while putting a slight inward pressure on the power and ground wires with your other hand, put the housing away from the amp and the power plug will pull free. You may find that slightly wiggling the housing back and forth as you pull will help, but with a little practice it becomes very easy to remove.

What are the dimensions of my Amplified Bazooka?

Select Amplified Model

Current Models
  T52A-30 T62A-30 T62A-30
A-80 Amplifier T62A-80 T82A-80 T8102A-80


Sas will continue to service & support discontiued products, look for this area to be fully funcitonal soon.

Discontinued Models
A-40 Amplifier T62A-40 T82A-40 T102A-40
A-70 Amplifier T62A-70 T82A-70 T102A-70

PASSIVE BASS TUBES

How much power do I need to drive my Bazooka® Bass Tubes® enclosure?

Who's Got the Power?

The easiest way to plan your power needs for a bass amp is to use a ratio of the power on the front speakers to the power needed for bass response. Typically a system using Bazooka® subwoofers would have a 1 to 2 ratio in a pickup or hatchback and a 1 to 3 ratio in a sedan. For example, if you are using 20 watts of power on your front speakers you would need 40 watts for a pickup or hatchback and 60 watts in a sedan.

  • Front speaker wattage x 2 = Bass amp wattage needed for a pickup or hatchback.

  • Front speaker wattage x 3 = Bass amp wattage needed for a sedan or coupe.

It is always better to have more power than not enough! More damage is done to speakers by under powering a system then having a power surplus. The most important thing is to create a balance between the high frequency output and the bass output, and the above ratios typically work out best with Bazooka® subwoofers.

What is the best location for my Bazooka?

Bazooka Placement

Locate an area in the rear of the vehicle where you would like to place the Bazooka® subwoofer systems. The location you have selected must meet the following requirements in order for the Bazooka® to deliver the best performance in your vehicle.

  • The woofer (grill end) should be facing into a corner. The rear of your vehicle should be considered one big corner. Facing rear usually produces the best results and is preferable to facing sideways. Sideways in the rear of the vehicle works well but SAS never recommends facing the woofer in the direction of the listener as this usually delivers poor quality output.


  • Ideally, there should be 2 to 4 inches between the woofer and the corner it is pointing into for best results. However if your selected placement is not exactly within these parameters, it is not critical.


  • The mounting area should be carefully checked to be sure that the mounting screws will not damage the gas tank, electrical wiring, fuel lines or the spare tire during the mounting process. (This requires a visual search of the underside of the vehicle where the Bass Tube enclosure is to be mounted)


  • The strap mounting bases should be screwed securely to a rigid surface that is part of, or anchored to, the structure of the vehicle. Be sure that you application meets all of these requirements
How much power do I need to drive my Bazooka® Bass Tubes® enclosure?

Who's Got the Power?

The easiest way to plan your power needs for a bass amp is to use a ratio of the power on the front speakers to the power needed for bass response. Typically a system using Bazooka® subwoofers would have a 1 to 2 ratio in a pickup or hatchback and a 1 to 3 ratio in a sedan. For example, if you are using 20 watts of power on your front speakers you would need 40 watts for a pickup or hatchback and 60 watts in a sedan.

  • Front speaker wattage x 2 = Bass amp wattage needed for a pickup or hatchback.

  • Front speaker wattage x 3 = Bass amp wattage needed for a sedan or coupe.

It is always better to have more power than not enough! More damage is done to speakers by under powering a system then having a power surplus. The most important thing is to create a balance between the high frequency output and the bass output, and the above ratios typically work out best with Bazooka® subwoofers.

When using multiple Bazooka®'s, what is the best way to configure my Bass Tubes® enclosure?

Multiple Bazooka® Placement

There are 3 things to remember when using multiple Bazooka® subwoofers.
  • Face all woofers to the rear of the vehicle.

  • Align all woofers on the same plane.

  • Position the woofers at a distance from the rear that sounds good to you.
Rear Entry?
When using two or more Bazooka® subwoofers it is ideal to position them so that all woofers face to the rear of the vehicle. This almost always yields the best results in output.

If space is not available to position the woofers to the rear or it is not desirable due to cosmetic considerations, you may choose to direct the woofers into the side panels of the vehicle. This placement will result in a minor loss in output, which may or may not be audible, depending on your application.

You should never place a Bazooka® so that the woofer faces in the direction of the front of the vehicle. This will cause the output in the bass region to suffer greatly and therefore is never recommended by SAS.

A Virtual Wall of Sound!
To maintain the most output efficiency and achieve the most desirable sound quality, an effort should be made to keep the output ends of all Bass Tube enclosures aligned, so that the woofers are all on the same plane. This assure that the woofers work together and form a team that acts as a single large diaphragm. When Bazooka® subwoofers couple in this fashion, standing waves are minimized and phase alignment is easily maintained. This alignment will yield higher sound pressure levels in your vehicle, think of the possibilities!

Do You Hear What I Hear?
The type of bass response that you get from your system can be adjusted or tuned, simply by changing the position of the Bass Tube enclosure. In general, as you move the woofer end of the Bazooka® subwoofer closer to a rigid non-porous surface at the rear of your vehicle, the bass will get tighter and more accurate. As you move the woofer away from that surface the bass will open up and sound more boomy.

SAS has always recommended placement of 2 to 4 inches from a non-porous loading surface as a rule of thumb. Although this typically works best, you should not be alarmed if the sound you desire falls somewhere outside these guidelines.

Physical Challenge?
By using these three simple principles as a foundation you can build just about any type of system from mild to WILD utilizing multiple Bazooka® subwoofers.

As of 2/2/96 the highest officially measured SPL in a sanctioned Sound-Off Competition using multiple Bazooka® subwoofers is 152.3 dB by Ajay Maisuria of Class A Communications of London, England.

His system has 21 T82's and 700 watts of total system power, that's RIGHT only 700! All this in a Nissan van that is used daily as a fully functional delivery vehicle for his store, but on the weekends it hits the Sound-Off Circuit and wins! Last year 2nd in Nationals, this year…who Knows!

Now That's Efficiency!

Update 9/30/96; Ajay and his crew changed a few things around in their van. The current system is running only 300 watts of power on the Bazooka speakers and the official SPL was recorded in competition @ 152.3 dB.

When I play one Bass Tubes® enclosure it sounds great, but I get a muffled sound when the second Bass Tubes® enclosure is added.

Phase Cancellation
When two speakers in the same frequency range produce sound waves that are inverted from one another or 180° out of phase, the sound waves will cancel each other out to some degree. This effect will be heard as a drop in the output level and/or a muffled or muddy quality in the Bass Response.

The source of this Phase Cancellation can be at any point in the signal path. The obvious cause of this problem would be a speaker connection that was reversed in polarity, but that is not always the case. Sometimes amplifier channels will shift phase 180° for no good reason, or a signal processor could have a setting for phase that has been set incorrectly or the source material could just be recorded in error. No matter what or where the cause is located, the solution is an easy one.

Disconnect all but one Bazooka® from your system. Be sure that any loose wire connections are insulated to avoid the chance of short circuiting any of the electronic equipment. Listen to the system and take note of the level of the Bass Response. Connect the next Bazooka® and compare the level of the combined output to that of the single unit. If the Bass Response increases, the Phasing is correct and you can repeat this process on the next Bazooka®. if the level of the Bass Response drops, the Phasing is incorrect and you should reverse the speaker connections to this Bazooka® and compare again. In short to INCREASE IS GOOD, to DECREASE IS BAD!

Using this method, any number of Bazooka® subwoofers can be kept in absolute phase.

My Bazooka® plays great when the trunk is open but, when I close the trunk lid the bass goes away.

Where's the BASS?
First you should rule out any Phase Cancellation problems that may exist in your system.

When this variable is eliminated from the equation, there are primarily two factors left that could cause this effect in your vehicle.

  • Restriction of AIR FLOW

  • Development of STANDING WAVES
If the bass response in your system drops when you close the trunk, chances are it is due to poor AIR FLOW, excessive STANDING WAVES or a combination of the two.

AIR FLOW
The Bass Response will suffer if the trunk is sealed off from passenger compartment so that AIR FLOW is restricted between the two areas. Since sound waves are nothing more than moving air, any reduction in the AIR FLOW from the trunk will result in a reduction of the bass response in the passenger compartment.

Can I Get Some Relief Over Here?
To cure this problem you must reduce the restriction of AIR FLOW between the two areas.

This can be accomplished by removing some insulation or other acoustically opaque materials from behind the rear seats, under the rear deck or beneath the rear package tray.

If this is not possible, the only other way to overcome this problem is to create an opening in the acoustically opaque material between the trunk and the passenger compartment that is causing the AIR FLOW restriction. In most cases the back deck is the easiest area to create this type of opening. The opening can be in the form of a matrix of small holes, one or more ports, ducts or vents. Since the object is to increase AIR FLOW, the opening should be as large as possible without compromising the integrity of the vehicle.

With this opening(s) in the acoustically opaque material the Bass Response will pass through other acoustically transparent materials such as foam or cloth found in the rear seats, package tray or rear deck areas.

If the opening is visible, it can be covered with a cosmetic grill or a custom rear deck. This process requires custom install skills and we recommend that you consult with a qualified installation professional or have the work done by an Authorized SAS Dealer.

STANDING WAVES
When sound waves of the same frequency come together at opposite directions, they interfere with one another resulting in a full or partial cancellation of the output at that frequency. This type of wave interaction is known as STANDING WAVES.

What Do I Get?
If your Bazooka® subwoofer is positioned too far forward in the trunk area, it may result in systems of COMPLEX STANDING WAVES, resulting in a loss of bass output.

In a trunk, the paths that sound waves take to the front of the passenger compartment are rarely 100% acoustically transparent. This creates acoustical resistance or reduced AIR FLOW between the trunk and passenger compartment.

When this sub-division of the vehicles air space is compounded by the reflective and semi-reflective surfaces common in a trunk compartment, the development of COMPLEX STANDING WAVE SYSTEMS are common phenomenon.

If your Bazooka® subwoofer is placed near a semi-transparent surface in the trunk, like the area under the rear deck or behind the rear seats, the sound waves tend to bounce around in the trunk until pressure forces these sound waves into the passenger compartment.

This typically reduces the Bazooka® subwoofers output due to extreme systems of COMPLEX STANDING WAVES and takes away from the overall sound quality of the bass response.

There is a Remedy!
If you think you are experiencing output problems due to STANDING WAVES, the good news is you can easily correct this problem by simply relocating your Bass Tubes® enclosure(s) toward the rear of the vehicle.

When a Bazooka® subwoofer is loaded into a corner at the rear of the trunk the sound waves reflect off of the acoustically opaque corner and travel forward in a direct path towards the passenger compartment, reaching the listener with fewer STANDING WAVES and greater Bass Output.

Once the placement of the Bass Tubes® enclosure is at the rear of the trunk you should notice a marked improvement in the quality and output level of the bass response created by your Bazooka® subwoofer product.

What are the specifications of my Bazooka® speaker system?

Out of production "T" & "Series II" models
5" Bass Tubes® enclosure T52
6.5" Bass Tubes® enclosure T62 T16
8" Bass Tubes® enclosure T82 T18
10" Bass Tubes® enclosure T102

T52 Specifications
Bass Tubes Enclosure
Computer aligned bass reflex-ducted port
Woofer Size
5"
Voice Coil Size
1" high power / high temp
Magnet Size
20 oz.
Frequency Response
39-1500Hz
Efficiency
97dB*
Power Handling
6 to 50 watts/channel
T62 Dimensions
18" X 5" X 6"
Weight
19 lbs.
Impedance
4 ohms**

T62 Specifications
Bass Tubes Enclosure
Computer aligned bass reflex-ducted port
Woofer Size
6.5"
Voice Coil Size
1" high power / high temp
Magnet Size
20 oz.
Frequency Response
39-1500Hz
Efficiency
100dB*
Power Handling
6 to 100 watts/channel
T62 Dimensions
18" X 6.75" X 8"
Weight
22 lbs.
Impedance
4 ohms**

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T82 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 8"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 102dB*
Power Handling 6 to 150 watts/channel
T82 Dimensions 18" X 8.5" X 10"
Weight 31 lbs.
Impedance 4 ohms**

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T102 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 10"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 104dB*
Power Handling 6 to 200 watts/channel
T102 Dimensions 20.75" X 10.3" X 12.2"
Weight 23 lbs.
Impedance 4 ohms**

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T16 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 6.5"
Voice Coil Size 1" high power / high temp
Magnet Size 20 oz.
Frequency Response 39-1500Hz
Efficiency 100dB*
Power Handling 6 to 100 watts/channel
T102 Dimensions 36" X 6.75" X 8"
Weight 22 lbs.
Impedance 4 ohms**

T18 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 8"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 102dB*
Power Handling 6 to 150 watts/channel
T102 Dimensions 36" X 8.5" X 10"
Weight 31 lbs.
Impedance 4 ohms**
What are the dimensions of my Bass Tubes® enclosure?

Out of production "T" & "Series II" models
5" Bass Tubes® enclosure T52
6.5" Bass Tubes® enclosure T62 T16
8" Bass Tubes® enclosure T82 T18
10" Bass Tubes® enclosure T102

T52 Specifications
Bass Tubes Enclosure
Computer aligned bass reflex-ducted port
Woofer Size
5"
Voice Coil Size
1" high power / high temp
Magnet Size
20 oz.
Frequency Response
39-1500Hz
Efficiency
97dB*
Power Handling
6 to 50 watts/channel
T62 Dimensions
18" X 5" X 6"
Weight
19 lbs.
Impedance
4 ohms**

T62 Specifications
Bass Tubes Enclosure
Computer aligned bass reflex-ducted port
Woofer Size
6.5"
Voice Coil Size
1" high power / high temp
Magnet Size
20 oz.
Frequency Response
39-1500Hz
Efficiency
100dB*
Power Handling
6 to 100 watts/channel
T62 Dimensions
18" X 6.75" X 8"
Weight
22 lbs.
Impedance
4 ohms**

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T82 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 8"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 102dB*
Power Handling 6 to 150 watts/channel
T82 Dimensions 18" X 8.5" X 10"
Weight 31 lbs.
Impedance 4 ohms**

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T102 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 10"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 104dB*
Power Handling 6 to 200 watts/channel
T102 Dimensions 20.75" X 10.3" X 12.2"
Weight 23 lbs.
Impedance 4 ohms**

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T16 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 6.5"
Voice Coil Size 1" high power / high temp
Magnet Size 20 oz.
Frequency Response 39-1500Hz
Efficiency 100dB*
Power Handling 6 to 100 watts/channel
T102 Dimensions 36" X 6.75" X 8"
Weight 22 lbs.
Impedance 4 ohms**

T18 Specifications
Bass Tubes Enclosure Computer aligned bass reflex-ducted port.
Woofer Size 8"
Voice Coil Size 1.5" high power / high temp
Magnet Size 28 oz.
Frequency Response 39-1500Hz
Efficiency 102dB*
Power Handling 6 to 150 watts/channel
T102 Dimensions 36" X 8.5" X 10"
Weight 31 lbs.
Impedance 4 ohms**

Raw Woofers

How much airspace does my woofer need?
The answer to this question can be found in the manual for the woofer that you're dealing with. To get manuals, click on the manuals link to the left If you're looking for a specific enclosure size or design, post a question to our technical forum and one of our techs will respond to you directly.